Laboratory Test Sheet Undrained Triaxial Compression Test - BS 1377 : Part 7 : 1990

Undrained Triaxial Compression Test

Location

Job ref.

Borehole/Pit no.

Soil description

Sample No.

Depth excavated

Date

Group/Type

Date Form

Test method                 BS1377: Part 7:  1990  5/15/94  8/9*

Type of specimen Undisturbed/compacted*

Nominal diameter

Preparation procedure

Specimen details

Initially

After test

Sketch showing specimen

location in original sample

Diameter

D mm

Mass

g

Area

Ao mm2

Dry mass

g

Length

Lo mm

Moisture

Volume

cm3

Content

%

Mass

g

Density

Mg/m3

Compression test Single stage/Multistage, Stage*

Machine no

Rate of Deformation

Cell pressure

mm/min

kPa

Membrane thickness

Force device no.

Mean calibration

Stress factor

mm

n/division

kPa/div

Deformation

Compression

Strain

Force gauge

Axial force

Correct

Measured deviator stress

gauge

of specimen

e =  DL

reading

P

area

reading

DL

Lo

A = Ao

(s1-s3) =

1000P

1 - e

A

mm

N

mm2

kPa

Sketch of

Measured deviator stress  kPa

failure conditions

Membrane correction  kPa

Corrected deviator stress  kPa

Axial strain   %

Inclination of

Shear stress cu  kPa

Shear surface

Operator

Checked

Approved

* Delete as appropriate

Form 7G